I had already moved on with another Sony phone zx2c. The z3c is retired for good due to "old age" which had served me for more than 3 good years. Zx2c will be the phone now which I can also carry in my pants pocket.
... View more

I had replaced the z3c for this very same problem! In fact my screen had even been replaced once. The very same problem happened after some time. Even the GPS don't work well. I changed to zx2c hoping that sony will do better this time. It did not. Loudspeaker became faulty. Cannot even use the phone to make or receive a call. Sending in zx2c for repair! Sorry that i have to say these.
... View more

Now the sound from the loudspeaker got worse. Even at the loudest I could only hear a very faint sound. It's not the back cover. Phone not even usable! Need to send in for warranty service.
... View more

When the screen is inactive, we are supposed to swipe up to receive an incoming call. However, I could not receive a call even though I swipe UP many times. What is happening to my phone, SONY?
... View more

Found out that the crackling sound originated from the back cover of the zx2c. When I put the phone down on a soft surface , the crackling sound is gong even at high volume. Vibration of the back cover! I am going to get a soft casing the phone.
... View more

Bought the phone about 2 weeks ago. Now the sound from the phone loudspeaker crackling. The phone now cannot play music cryscry clear, what's app voice recording crackling sound. Anyone have similar problem?
... View more